Had to investigate an SSIS error code to figure out what was causing it. The error code was -1073450910. I pasted that code into Windows Calculator and converted to hex.
You have to trim the Fs from it, getting me C0047062. I then navigated to C:Program FilesMicrosoft SQL Server100SDKInclude and opened dtsmsg.h to search for the error. What followed was an error which explained absolutely nothing.